A cytogenetic study of Down syndrome determined that 46 of 1021 cases were the result of transloc...
A cytogenetic study of Down syndrome determined that 46 of 1021 cases were the result of translocations. The most frequent translocation was symbolized as t(14;21).
A. What does t(14;21) mean?
B. How many chromosomes total would you expect to be present in a Down syndrome individual with this translocation (normal humans have 46)?
C. Draw the complement of chromosomes 14 and 21 in a Down syndrome translocation individual. (Hint: they’re diploid for 14.)
D. Draw the chromosomes 14 and 21 in the normal carrier of the t(14;21) translocation. E. How many chromosomes total would you expect to be present in a t(14;21) carrier?
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A cytogenetic study of Down syndrome determined that 46 of 1021 cases were the result of transloc...
Please show calculation steps for this. Thank you Familial down syndrome is due to a Robesonian...
Please show calculation steps for this. Thank you
Familial down syndrome is due to a Robesonian translocation that fuses chromosome 21 to chromosome 14 (most often). Individuals that have this translocated chromosome but no symptoms of Down syndrome are called translocation carriers. How many chromosomes do translocation carriers have (human diploid cells are typically 2N=46)? If an individual has a Down syndrome caused by the presence of this type of Robesonian translocation, how many chromosomes do they have?
19) Trisomy 21, or Down syndrome, occurs when there is a nom complement but one (extra)...
19) Trisomy 21, or Down syndrome, occurs when there is a nom complement but one (extra) chromosome 21. Although fertility is reduced in both sexes, females have higher fertility rates than males. Van Dyke et al. (1995; Down Syndrome Research and Practice 3(2):65-69) summarize data involving children born of Down syndrome individuals. Assume that children are born to a female with Down syndrome and a normal 46-chromosome male. What proportion of the offspring would be expected to have Down syndrome?...
Down syndrome, or trisomy 21, in humans is caused by an extra copy of the relatively...
Down syndrome, or trisomy 21, in humans is caused by an extra copy of the relatively small, acrocentric 21. Including only chromosome 21, the X chromosome (medium in size and somewhat metacentric) and the Y chromosome (small and acrocentric), draw one possible array of chromosomes in the four sperm cells produced by the complete meiosis of one primary spermatocyte in a male individual with Down syndrome. For the purposes of this question, assume that males with Down syndrome produce normal...
13,15 & 16 13. Deletion, Translocation, Inversion, Duplication, OR Mosaicism? Involved in 46, 5p- May result...
13,15 & 16
13. Deletion, Translocation, Inversion, Duplication, OR Mosaicism? Involved in 46, 5p- May result in a position effect which affects gene expression May result in pseudodominance of allele normally recessive to a dominant allele Two genetically distinct populations of cells in a single individual Will result in abnormal gamete formation (more than one answer) Involved in familial Down syndrome Lethal if it occurs in the same region of two homologous chromosomes No loss or gain of genetic material...
2 BIO 302 MIDTERM (CH 7-8) 1 Cause of familial Down syndrome is 2. Gain of...
2 BIO 302 MIDTERM (CH 7-8) 1 Cause of familial Down syndrome is 2. Gain of single chromosome leads to 7 Cotton plant is an example of Triploidy B. Trisomy C.Translocation A Trisomy B. Allopolyploidy C. Amphidiploidy D. Pentaploidy A. Diploidy B.Triploidy C. Tetraploidy D. Trisomy E Monosomy What is "normal chromosome number? 18. What doesn't happen in endopolyploidy'or 3. Diploidy B. Triploidy C. Tetraploidy D. Trisomy EMonosomy 4. Multiple of same genome could be termed as A. Division of...
10:54 lLTE Notes October 6, 2019 at 10:49 PM 1. How many chromosomes are found in...
10:54 lLTE Notes October 6, 2019 at 10:49 PM 1. How many chromosomes are found in a homologous pair? (.5 pt) 2. How many chromatids are found in a homologous pair? (.5 pt) 3. During what part of the cell cycle are G1 and G2 found? (.5 pt) 4. How many chromosomes are found in a human body cell? (.5 pt) 5. Do all organisms have the same number of chromosomes? (.5 pt) 6. If a cell has 16 pairs...
please help and thank you Materials Needed per class: 1 box of 24 microscope slides of...
please help and thank you
Materials Needed per class: 1 box of 24 microscope slides of meiosis 1 1 box of 24 microscope slides of meiosis 2 red and yellow popbead chromosome kits Objectives To become familiar with the process of meiosis and to be able to identify the principal phases of meiosis To understand how the process of meiosis is similar to mitosis and how it differs from mitosis Introduction The genetic information of a cell is encoded in...
can u tell me if these answers are correct please!??!!! Choose the best answer for the...
can
u tell me if these answers are correct please!??!!!
Choose the best answer for the following questions. Place your answer on the line. If your answer is not on the line.it does not count 1 Mender's discovery that characteristics are inherited due to the transmission of hereditary factors resulted from his (1) dissections to determine how fertilization occurs in pea plants (2analysis of the offspring produced from many pea plant crosses (3) careful microscopic examinations of genes and chromosomes...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving rise to a “hairless” phenotype. In the homozygous condition, H is lethal. An independently assorting dominant allele S has no effect on bristle number except in the presence of H, in which case a single dose of S suppresses the hairless phenotype, thus restoring the "hairy" phenotype. However, S also is lethal in the homozygous (S/S) condition. What ratio of hairy to hairless flies...
1. Consumer’s utility function is: U (X,Y) = 10X + Y. Consumer’s income M is 40...
1. Consumer’s utility function is: U (X,Y) = 10X + Y. Consumer’s income M is 40 euros, the price per unit of good X (i.e. Px ) is 5 euros and the price per unit of good Y (i.e. Py) is 1 euro. a) What is the marginal utility of good X (MUx) for the consumer? ( Answer: MUx = 10) b) What is the marginal utility of good Y (MUy) for the consumer? ( Answer: MUy = 1) c)...
Please show calculation steps for this. Thank you
Familial down syndrome is due to a Robesonian translocation that fuses chromosome 21 to chromosome 14 (most often). Individuals that have this translocated chromosome but no symptoms of Down syndrome are called translocation carriers. How many chromosomes do translocation carriers have (human diploid cells are typically 2N=46)? If an individual has a Down syndrome caused by the presence of this type of Robesonian translocation, how many chromosomes do they have?
19) Trisomy 21, or Down syndrome, occurs when there is a nom complement but one (extra) chromosome 21. Although fertility is reduced in both sexes, females have higher fertility rates than males. Van Dyke et al. (1995; Down Syndrome Research and Practice 3(2):65-69) summarize data involving children born of Down syndrome individuals. Assume that children are born to a female with Down syndrome and a normal 46-chromosome male. What proportion of the offspring would be expected to have Down syndrome?...
13,15 & 16
13. Deletion, Translocation, Inversion, Duplication, OR Mosaicism? Involved in 46, 5p- May result in a position effect which affects gene expression May result in pseudodominance of allele normally recessive to a dominant allele Two genetically distinct populations of cells in a single individual Will result in abnormal gamete formation (more than one answer) Involved in familial Down syndrome Lethal if it occurs in the same region of two homologous chromosomes No loss or gain of genetic material...
2 BIO 302 MIDTERM (CH 7-8) 1 Cause of familial Down syndrome is 2. Gain of single chromosome leads to 7 Cotton plant is an example of Triploidy B. Trisomy C.Translocation A Trisomy B. Allopolyploidy C. Amphidiploidy D. Pentaploidy A. Diploidy B.Triploidy C. Tetraploidy D. Trisomy E Monosomy What is "normal chromosome number? 18. What doesn't happen in endopolyploidy'or 3. Diploidy B. Triploidy C. Tetraploidy D. Trisomy EMonosomy 4. Multiple of same genome could be termed as A. Division of...
10:54 lLTE Notes October 6, 2019 at 10:49 PM 1. How many chromosomes are found in a homologous pair? (.5 pt) 2. How many chromatids are found in a homologous pair? (.5 pt) 3. During what part of the cell cycle are G1 and G2 found? (.5 pt) 4. How many chromosomes are found in a human body cell? (.5 pt) 5. Do all organisms have the same number of chromosomes? (.5 pt) 6. If a cell has 16 pairs...
please help and thank you
Materials Needed per class: 1 box of 24 microscope slides of meiosis 1 1 box of 24 microscope slides of meiosis 2 red and yellow popbead chromosome kits Objectives To become familiar with the process of meiosis and to be able to identify the principal phases of meiosis To understand how the process of meiosis is similar to mitosis and how it differs from mitosis Introduction The genetic information of a cell is encoded in...
can
u tell me if these answers are correct please!??!!!
Choose the best answer for the following questions. Place your answer on the line. If your answer is not on the line.it does not count 1 Mender's discovery that characteristics are inherited due to the transmission of hereditary factors resulted from his (1) dissections to determine how fertilization occurs in pea plants (2analysis of the offspring produced from many pea plant crosses (3) careful microscopic examinations of genes and chromosomes...
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